What problem does it solve? It turns OpenSpec change plans into working code by walking through each task in a change, applying the implementation, and tracking progress without losing context between sessions. ## Core Features & Use Cases - Change selection and status inspection: Select a change by name, infer it from context, or list available changes, then read schema, progress, and task state via openspec status and openspec instructions apply. - Guided task implementation loop: Read context files (proposal, specs, design, tasks), implement each pending task, and mark checkboxes complete as work finishes. - Blocked and paused state handling: Detect blocked or missing-artifact states, surface issues, and pause for user guidance instead of guessing. - Use Case: A developer has an OpenSpec change named add-auth with seven defined tasks. They invoke the skill, which reads the spec and design artifacts, implements each task in order, and reports 7/7 completion with a suggestion to archive the change. ## Quick Start Ask the agent to apply the OpenSpec change named add-auth and implement all of its pending tasks.